Re: arm-gcc: pointer to constant string

Subject	Re: arm-gcc: pointer to constant string
Newsgroups	comp.arch.embedded
References	<pnfp7q$a7b$1@dont-email.me> <g01ee7F9ruuU1@mid.individual.net> <png2d4$opd$1@dont-email.me> <nnd$5f662a91$246fe099@79ac3082f191d842> <pngf4m$7rf$1@dont-email.me>
From	Tom Gardner <spamjunk@blueyonder.co.uk>
Message-ID	<OSPmD.228814$fy.67599@fx26.am4> (permalink)
Organization	virginmedia.com
Date	2018-09-14 15:48 +0100

Show all headers | View raw

On 14/09/18 15:04, David Brown wrote:
> On 14/09/18 14:52, Stef wrote:
>> On 2018-09-14 David Brown wrote in comp.arch.embedded:
>>> On 14/09/18 11:47, Nils M Holm wrote:
>>>>
>>>> Yes. K&R II (The C Programming Language, 2nd Ed), says that
>>>
>>> K&R does not define the C language.  It was an approximation to a
>>> definition until ANSI (then ISO) made the standard, and has not been
>>> relevant for decades.
>>
>> You must be talking about K&R, Nils Specifically said K&R II.
>> That edition has printed "ANSI C" in large capitals on the cover.
>> A quote from the preface:
>>    "This second edition of 'The C Programming Language' describes C
>>     as defined by the ANSI standard"
> 
> Exactly - it /describes/ the C language defined by the standard.  It
> does not define the language, or the standard, or give a complete or
> accurate set of rules for it.  That is what the /standard/ is for.  K&R
> (all editions) are /tutorials/, not standards or language definitions.
> (Equally, the standards are not tutorials, and say as much in their
> forewords.)  K&R was updated for the second edition to contain much of
> what is often incorrectly termed "ANSI C", but it was never expected to
> be exact.
> 
>>
>> That standard is almost identical to C90 IIRC. And that standard is,
>> however old, still relevant. The Keil ARM compiler for instance defaults
>> to C90 and you have to specifically enable C99. (and nothing newer if you
>> don't want to set it to C++ 2003)
>>
>> So don't throw out your K&R II just yet!
>> I have my copy within an arms reach. ;-)
>>
> 
> K&R is considered a "classic" in terms of quality technical writing.  It
> is not a good book for learning modern C.  It is not a good book for
> learning embedded programming.  It is not a good book to use as a
> reference for the details of the C language.  It is better than many
> others, but it is badly outdated, contains some horrible advice and
> examples, is strongly oriented towards command-line Unix software from
> the 80's and 90's, which is completely inappropriate for embedded
> development, and C is almost always a poor choice for modern day
> programming of the sort of tasks targeted in the book.
> 
> It is true that many compilers default to C90.  That is not an excuse
> for using C90 - if you are serious about C development, you should be
> using /your/ choice of C standard, not the default from the compiler.
> It is an unfortunate reality that some people still have to use
> compilers that don't support C99 - that is, obviously, a good reason for
> using C90.  Other than that, /you/ should choose your version of the
> language - and you should choose at least C99 because it lets you write
> higher quality software.  And if your tool vendor does not support C11
> by now, complain to them.
> 
> 
> The year is 2018.  Why anyone would think that a 30 year old tutorial
> book is a better choice of reference than the current official standards
> is beyond my comprehension.
> 
> So K&R (I or II) is an interesting read, and interesting history - but I
> would not consider it a way to learn good embedded C programming, nor
> would I consider it a useful reference.
> 
> And if you want more readable references then there are plenty available
> online.  My recommendation (for C and C++) is
> <https://en.cppreference.com/>.

Mine is the C++ FQA (sic): http://yosefk.com/c++fqa/

The FQA isn't completely up to date; but then the nice thing
about C "standards" is that there are so many to choose from.

Thread

arm-gcc: pointer to constant string pozz <pozzugno@gmail.com> - 2018-09-14 09:50 +0200
  Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 11:18 +0200
    Re: arm-gcc: pointer to constant string pozz <pozzugno@gmail.com> - 2018-09-14 13:05 +0200
      Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 13:25 +0200
  Re: arm-gcc: pointer to constant string Nils M Holm <nmh@ananda.local> - 2018-09-14 09:47 +0000
    Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 12:26 +0200
      Re: arm-gcc: pointer to constant string Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2018-09-14 14:52 +0200
        Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 16:04 +0200
          Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-14 15:48 +0100
            Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 17:02 +0200
              Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-14 18:45 +0100
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 20:37 +0200
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-14 20:51 +0100
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-15 16:24 +0200
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-15 17:28 +0100
                Re: arm-gcc: pointer to constant string Clifford Heath <no.spam@please.net> - 2018-09-16 13:58 +1000
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-16 08:42 +0100
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-16 08:47 +0100
                Re: arm-gcc: pointer to constant string Clifford Heath <no.spam@please.net> - 2018-09-16 20:18 +1000
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-16 12:25 +0100
                Re: arm-gcc: pointer to constant string Clifford Heath <no.spam@please.net> - 2018-09-16 22:22 +1000
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-16 15:00 +0200
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-16 14:33 +0100
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-16 22:06 +0200
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-16 21:42 +0100
                Re: arm-gcc: pointer to constant string Les Cargill <lcargill99@comcast.com> - 2018-09-17 21:24 -0500
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-18 08:49 +0200
                Re: arm-gcc: pointer to constant string Les Cargill <lcargill99@comcast.com> - 2018-09-21 22:15 -0500
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-22 11:53 +0200
                Testing (Was: arm-gcc: pointer to constant string) Jacob Sparre Andersen <jacob@jacob-sparre.dk> - 2018-09-22 12:16 +0200
                Re: Testing (Was: arm-gcc: pointer to constant string) David Brown <david.brown@hesbynett.no> - 2018-09-22 13:31 +0200
                Re: Testing (Was: arm-gcc: pointer to constant string) Clifford Heath <no.spam@please.net> - 2018-09-23 09:26 +1000
                Re: arm-gcc: pointer to constant string Niklas Holsti <niklas.holsti@tidorum.invalid> - 2018-09-22 20:06 +0300
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-23 14:39 +0200
                Re: arm-gcc: pointer to constant string Les Cargill <lcargill99@comcast.com> - 2018-09-22 13:50 -0500
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-23 15:21 +0200
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-23 16:06 +0100
                Re: arm-gcc: pointer to constant string julio@diegidio.name - 2018-09-23 08:41 -0700
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-23 16:49 +0100
                Re: arm-gcc: pointer to constant string julio@diegidio.name - 2018-09-23 08:56 -0700
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-23 18:20 +0100
                Re: arm-gcc: pointer to constant string julio@diegidio.name - 2018-09-23 12:05 -0700
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-23 20:50 +0100
                Re: arm-gcc: pointer to constant string Les Cargill <lcargill99@comcast.com> - 2018-09-23 12:04 -0500
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-23 18:27 +0100
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-23 19:37 +0200
                Re: arm-gcc: pointer to constant string Jacob Sparre Andersen <jacob@jacob-sparre.dk> - 2018-09-24 12:53 +0200
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-24 13:49 +0200
                Re: arm-gcc: pointer to constant string Les Cargill <lcargill99@comcast.com> - 2018-09-28 20:17 -0500
                Re: arm-gcc: pointer to constant string Tom Gardner <spamjunk@blueyonder.co.uk> - 2018-09-18 08:32 +0100
                Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-18 10:02 +0200
                Re: arm-gcc: pointer to constant string Les Cargill <lcargill99@comcast.com> - 2018-09-21 22:17 -0500
          Re: arm-gcc: pointer to constant string Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2018-09-14 18:30 +0200
            Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 20:46 +0200
      Re: arm-gcc: pointer to constant string Stefan Reuther <stefan.news@arcor.de> - 2018-09-14 19:57 +0200
        Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-14 20:56 +0200
          Re: arm-gcc: pointer to constant string Stefan Reuther <stefan.news@arcor.de> - 2018-09-15 18:32 +0200
            Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-16 15:06 +0200
      Re: arm-gcc: pointer to constant string Richard Damon <Richard@Damon-Family.org> - 2018-09-14 19:59 -0400
        Re: arm-gcc: pointer to constant string David Brown <david.brown@hesbynett.no> - 2018-09-15 16:25 +0200
  Re: arm-gcc: pointer to constant string Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2018-09-14 13:49 +0300

csiph-web